When isoprenaline was injected a relaxation curve could be recorded; while acetylcholine was injected,a contraction curve could be recor ded.是什么意思_When isoprenaline was injected a relaxation curve could be recorded; while acetylcholine was injected,a contraction curve could be recor ded.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句